<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.currentCity}}</div>
					</div>
				</div>
			</div>

			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div
						class="button-wrapper"
						v-for="item of hotCities"
						:key="item.id"
						@click="handleCityClick(item.name)"
					>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>

			<div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
				<div class="title border-topbottom">{{key}}</div>
				<div
					class="item-list"
					v-for="innerItem of item"
					:key="innerItem.id"
					@click="handleCityClick(innerItem.name)"
				>
					<div class="item border-topbottom">{{innerItem.name}}</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
import {mapState ,mapMutations} from 'vuex'
import Bscroll from "better-scroll";
export default {
  name: "CityList",
  props:{
    hotCities:Array,
    cities:Object,
    letter:String
  },
  methods: {
    handleCityClick(city){
      // this.$store.commit('changeCity',city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState({
      currentCity:"city"
    })
  },
  watch: {
    letter(){
      if(this.letter){
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper);
  },
};
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.list {
  overflow: hidden;
  position: absolute;
  top: 1.68rem;
  left: 0;
  right: 0;
  bottom: 0;

  .title {
    line-height: 0.54rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .button-list {
    overflow: hidden;
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;

    .button-wrapper {
      float: left;
      width: 33.33%;

      .button {
        margin: 0.1rem;
        padding: 0.1rem 0;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
    }
  }
}
</style>
